<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <frameset cols="33%,33%,*">
        <frame src="1.html">

        <frameset rows="30%,*">
            <frame src="2.html">
            <frame name="f3" src="3.html">
        </frameset>

    </frameset>

    <frame src="4.html">
</html>